CVE-2019-12210
mediumpriority · track · 33EPSS 0.021 · 81 %ileEURUUSEPSS · scored 2026-10-27
In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–8.1
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (20)
External citations — patches, advisories, analysis.
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.htmlcnnvd
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.htmlcnnvd
- http://www.openwall.com/lists/oss-security/2019/06/05/1cnnvd
- https://developers.yubico.com/pam-u2f/Release_Notes.htmlcnnvd
- https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-12210cnnvd
- https://vigilance.fr/vulnerability/Yubico-PAM-U2F-information-disclosure-via-File-Descriptor-29580cnnvd
- https://www.auscert.org.au/bulletins/ESB-2019.2466/cnnvd
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